Marking-machine



G. H. AND E. -L. LANG.

MARKING MACHINE APPLICATION FILED mm. 1921.

Patented Nov. 22, 1921.

3 SHEETS-SHEET 1- G. H. AND E. L. LANG.

MARKING MACHINE. APPLICATION FILED APR- 7. 1921.

1 ,398,076, Patented Nov. 22, 1921.

3 SHEETS-SHEET 2.

Inventors. George HLong.

ElmerLLcmg G. H. AND E. L. LANG.

MARKING MACHINE.

APPLICATION men APR. 1. 1921.

1,398,076, Patented Nov. 22, 1921.

3 SHEETS-SHEET 3.

Inventors. George H. Long UmerLLcmg A T Tys.

UNITED STATES GEORGE E. LANG AND ELMER L. LANG. OF BOSTON,

MASSACHUSETTS.

MARKIN G-MACHIN E.

Specification 01" Letters Patent.

Patented Nov. 22, 1921.

Application filed April 7, 1921. Serial No. 459,287.

To all whom it may concern:

Be it known that we, GEORGE H. LANG and ELMER L. LANG, citizens of theUnited States, and residents of Boston, county of Sufiolk, State ofMassachusetts, have invented an Improvement in Marking-Machines, ofwhich the following description, in connection with the accompanyingdrawing, is a specification, like characters on the drawing representinglike parts.

This invention relates to marking machines such as are used for markinglaundry, shoe linings and other similar articles and which comprise aplaten or work support on which the work is placed, averticallyreciprocating printing head carrying the type, and an inkingroll arranged to be moved back and forth across the typeto ink thelatter at each reciprocation of the printing head.

The objects of the present invention are to provide an improved inkingmechanism for inkin the type having the features which vwil be morefully hereinafter set forth.

In order to give an understanding of the invention, we have illustratedin the drawings a selected embodiment thereof which will now bedescribed, after which the novel features will be pointed out in theappended claims.

In the drawings, Figure 1 is a side view of a printing head embodyingour invention; Fig. 2 is a section on the line 2-2, Fig. 1; Fig. 3 is asection on the line 33, Fig. 2; Fig. 4 is a section on the line l-t,Fig. 2. Fig; 5 is a section on the line 5-5, Fig. 1.

Fig; 6 is a fragmentary side view showing an ink reservoir for supplyingink to the distributing roll,

Fig. 7 is a plan view ofthe ink reservoir and distributing roll.

Fig. 8 is a section on the line 8-8, Fig. 7.

In the machine herein shown 1 indicates a frame which carries a worksupport or platen 2 and which is also provided with an overhanging armor head 3 in which is mounted for reciprocation a plunger 4 carrying theprinting head 5. The printing head is shown as provided with type 6 formaking. the printed impression. The vertical reciprocation of theplunger 4 moves it toward and from the platen 2 as usual in devices ofthis sort. Said plunger may be given its vertical movement in anysuitable way. We have herein shown a plunger operated by a toggle leverdevice 7 which is connected by a link 8 to an eccentric on a shaft 9.Said shaft 9 is. driven from the driving shaft 10 by means of suitablegearing 11. The parts thus far described are or may be all. as usual inmarking machines of this type and constitute no part of our presentinvention.

The type 6 is inked by means of an inking roll 12 which is carried intwo connected arms 13 that are pivotally mounted at 14 upon two uprights15 that rise from the printing head 5. One of the arms 13 has a link 16pivotally connected thereto at 17, said link being also pivotallyconnected to the frame at 18. By means of this construction the upwardmovement of the print ing head will cause the arms 13 to be swungforwardly thereby to carry the inking roll across the face of the type,as shown by dotted lines Fig. 1, and the downward movement of theprinting head will cause the arms to swing backwardly into the positionshown in Fig. 1.

In order to evenly ink the type 6 it is desirable that the inking rollshould roll across the face of the type under uniform pressure. The arms13 have a swinging motion about the pivot 14, and hence the ink rollwould naturally travel in the arc of a circle. The face of the type 6,however, is in a plane, and to provide for the ink roll 12 moving acrossthe face of the type in a straight line rather than in a curve, we haveprovided a novel method of guiding the ink roll during the time that itis moving across the face of the type. The arms 13 are provided at theirupper ends with slots 19 in. which the pivot studs 14: are received,said slots allowing a vertical movement of the arms 13. A spring 20 isplaced in each slot, each spring acting against one end of the slot andagainst the trunnion or pivot 14. Said springs. therefore, willyieldingly hold the arms 13 in their elevated position, but will allowthem to give slightly in a downward direction. Each arm is provided witha roll 21 which is adapted to travel over a track or guide 22 carried bythe side of the printing head. This guide 22 has a curved por tion 23 atone end, the remainder of the guide being straight and parallel with the.face of the type 6. As the arms 13 swing from their full line position,Fig. 1, to the dotted line position, the rolls 21 will travel over thetrack 22 and said track will, there:

fore, cause the ink roll to travel in a straight line while it is movingover the face of the type, and the type will, therefore, be uniformlyinked. The springs 20 permit this change of direction of movement of theink roll from the circular to the straight line as determined by thetrack 22.

Ne have provided herein means for adjusting the rolls 21 verticallythereby to determine the pressure with which the ink roll will bearagainst the type. This vertical adjustment also permits type ofdifferent heights to be used. The rolls 21 are shown as mounted onspindles 24 which are carried in cylindrical supports 25 that arerotatably mounted in the arms 13. The spindles 24 are situatedeccentrically of the supports 25 so that when said supports are turnedthe spindles 24 will be moved to adjust the rolls 21 up or down.Eachsupport 25 is provided with a knurled head 26 by which it may beturned, and it is also provided with a notched collar 27 whichcooperates with a spring-pressed pawl 28 pivoted to one of the arms at29 and acted on by a spring 30. This pawl 23 serves to lock the supportin its adjusted position. b 7

Another feature of our invention relates to the manner of supplying inkto the inking roll 12. This is done by means of a positively-drivenink-supplying roll 31 which is situated so that the ink roll 12 isbrought into contact therewith when the arms 13 are in the rearwardlimit of their stroke. This distributing roll 31 is shown as looselymounted on a spindle 32 which is journaled in a bracket 33 carried bythe frame 1. The roll 31 is provided with an axial aperture 34 which islarger than the spindle 32 so that said roll canmove radially relativeto the spindle. The spindle 32 is positively driven and the roll 31 iscoupled thereto so that the roll is also positively rotated. For thusdriving the spindle 32 the latter is provided with a pulley 35 which isbelted by a transmission belt 36 to a pulley 37 on the shaft 9. Forcoupling the loosely-mounted roll 31 to the spindle, we provide thelatter near one end with a transversely-extending pin 38, see Fig. 4,the ends of which are loosely received in apertures 39 formed in the hub40 extending from one end of'the roll31. This provides the desiredpositive driving connection, but at the same time allows the roll 31 tohave its movement relative to the spindle. The object of looselymounting the roll on the spindle is to prolong the time of contactbetween the, inking roll 12 and the distributing roll when the arms 13swing backwardly. As the arms 13 approach the rearward limit of theirmovement the inking roll 12 will be broughtinto contact with theink-distributing roll31, and during the final backward movement of saidarms 13, the pressure of the inkroll 12 against the distributing rollwill lift t .e distributing roll slightly because of the looseness withwhich it is mounted on the spindle. The ink roll, however, is, beingpositively driven, but since it is yieldingly supported, the length oftime with which it is permitted to contact with the ink roll 12 isprolonged. The ink roll 12 is mounted so that it can freely rotate, andduring the time that it is in contact with the ink-distributing roll, itwill be rotated by the latter and will thus be thoroughly and uniformlysupplied with ink.

in Figs. 6, 7 and 8 we have illustrated an ink reservoir for supplyingink to the distributing roll 31. Such ink reservoir is shown at 59 andit is supported on the bracket 33 in which the spindle 32 for thedistributing roll 31 is journaled. This ink reservoir has an opening 41at one edge and which receives a wick 40 which extends through theopening and bears against the roll 31. The wick is adjusted by means ofa toothed wheel 42 carried on a shaft journaled in the reservoir and isprovided with a thumb wheel 43 by which it may be adjusted. The toothedwheel 42 engages the wick so that the turning of the wheel will adjustthe wick back and forth. 7

We claim: l

1. In a marking machine, the combination with a work support, of avertically-movable printing head, arms rising from the printing head, anink roll carrier pivotally connected to said arms, an ink roll mountedin said carrier, means to swing the carrier to carry the ink roll acrossthe face of the type supported by the printing head, and meansassociated with the printing head to cause said ink roll to have a rightline movement while it is passing over the type face.

2. In a marking machine, the combination with a platen or work support,of a vertically-movable printing head carrying type, arms risingtherefrom, a carrier pivoted to said arms, an ink roll mounted in saidcarrier. means to swing the carrier as the printing head reciprocates,guides associated with the printing head, and rolls adjustably mountedon the carrier and cooperating with said guide-to control the movementof the inking roll as it is moving across the type.

3. In a marking machine, the combination with a vertically-movableprinting head carrying type, of a pivotally-mounted inking roll carrier,an inking .roll loosely mounted therein, a positively-drivenink-distributing roll, and means to swing the carrier to carry theinking roll into contact with said-inkdistributingroll and then acrossthe face of the type.

4. In a marking machine, the combination with a vertically-movableprinting head carrying type, of a pivotally-mounted inking r011 carrier,an inking roll rotatably mounted therein, a .positivelvdriven but yield0 ingly-monnted ink-distributing roll, and means to swing the carrier tocarry the inking roll into contact with said ink-distributing roll andthen across the face of the type.

5. In a marking machine, the combination with a vertically-movableprinting head carrying type, of a pivotally-mountect inking r011carrier, an inking r011 i'otatabiy mounted therein, a positively-drivenbut yieldingly-mounted ink-distributing r011, means to swing the carrierto carry the inking roll into contact with said ink-distributing rolland then across the face of the type, an lnk reservoir having anopening, and a WlOk within the reservoir which projects through 15GEORGE I-I. LANG. ELMER L. LANG.

